The beautiful city of Trenčín can be found along the Váh River valley, which is not too far from the Czech border. Trenčín Castle is in the Western part of the country and can be traced to the Roman Empire. This beautiful old castle also features a museum, and both are protected by the National Cultural Monument of Slovakia.
12) Spiš Castle
Spiš Castle is one of the oldest castles in all of Europe, located in the village of Žehra, above Spišské Podhradie. This ancient castle dates back to the 12th century, and is also part of the UNESCO list of World Heritage Sites.